Locomotive



Ian. 22 1924.

J. D. PUGH LOCOMOTIVE Original Filed Sept. l1, 1916 PatentfedJan. 22, 1924.` i UNITED STATES PATENT OFFICE.

JOHN D. 211GB, I' IOUIT WASHINGTON, BALTIIOBE, MARYLAND.

LOCOHQTIVE.

pplleltinn dlellltptenber 1l, 1916, Bedel No. 119,570. Renewed September 28, 1923.

Toallachomtmy comm: l

Beitl known that I, JOHN D. Poca, a e1t1- i Anelno thed'llnited States, residing at Mount Y"' Vlash'ingon, Baltimore, in the county of Baltimore, State of Maryland, have invented certain 'new and useful Im rovements in Locomoti'ves, of which the fo lowing is a specilcation.

The presentinvention relates to improvements 1n locomotives and has for its articuob'ect to utilize the power whc is ordinu'ily wasted in steam locomotives and to obtain additional wer without increasing the amount of fue consumed, or to increase the powerthat, is obtainable per horse power hour from a certainamount of fuel.

It is well known that steam at substntially atmospheric pressure when exhausted into a condenser at, for example, 28 inch vacuum, contains practically as much available heat energy as it has between the .usual boiler pressures exhaustin into the atmosphere; and therefore in, or example, a standard steam locomotive, this energy is entirely lost. By 1 coxp'ounding a portion of this waste is utiliz Abut in order to recover all of it cylinders ofl such bulk and other ecial apparatus are re uired as to make liisipractically impossibe on steam locomotives.

According to the present invention the power which isthus lost in an ordinary steam` locomotive is utilized 'to' actuate a turbo-electric nerator connectedwth motors which wil sup lement the power of the steam locomotive. at is,I by the present in-V vention the exhaust steam from a steam locomotive is employed to operate an electric locomtive so that a `maximum amount of theA power by a certain fuel consumption cat-se utilized.

The accompanying 'drawing illustrates, more or less diagmmmatically and; conventionally, in elevation, one embodiment of the inventlon.

Referring to the drawing Arepresents a standard steam locomotive iaving a tender B provided as usual with Stora *e Ineansfor uel and a-tank or reservoir er water to be supplied to the boiler of the locomotive.

In front of the locomotive A, according to the embodiment ofthe invention illustrated, is. coupled `an electric locomotive including an electric generator C and motors D. As shown, the motors are supported on the trucksrof the electric locomotivejand connected with the axles by gearin arranged within .suitable castings E. Simi ar motors may, if desired, be provided on one or more of the cars of the train.f The generator C is ada ted to be driven by steam turbine G, the in et to which is connectedthrouh a conduit H with the exhaust outlet o the steam locomotive A. shown, the turbine G and 'generator are connected by 4a train of `gears but any other suitable connection between these parts may be employed.

.The exhaust from the turbine G is conducted through a conduit K to a condenser 4VL. It will be preferable to employ water as the condensing Huid, although air4 or other medium may be used7 and in the embodiment of the invention this is drawn from the storage tank or reservoir on the tender B of the steam locomotive by a pum M and dischar ed into the condenser J through a pipe The condensed steam and water will be collected in a common cham-` ber or hot wellL at the bottom of the condenser a'nd lfrom this well feed water for the boiler of the steam locomotive may be Withdrawn through a conduit l connected with the injector pump a.

To` avoid the necessity for a very large storage receptacle for condensing water, it is proposed to provide the apparatus with a cooling tower O into which heated water from the chamber L will be forced by a ump P and in which tower the water will be acted upon by an air blast created in any suitable manner, as by the motion of they train orby a blower O The water cooled in the tower O is returned to the storage tank or reservoir in the tender B of the steam locomotive through a suitable conduit o.

' As the exhaust steam from the locomotive is utilized to drive the electric generator rce draft in the steam locomotive, sai blower being connected with the forward enrl of thc boiler casing through -a conduit 1. I v

The necessary auxiliaryapparatus, rheostats, etc. of the electric lomocotive may be arranged within a compartment S andsuitable rcs-generators or storage batteries within a compartment "I". The controlling apparatusfor both the electric and steam locomotives may be arranged either within the compartment U of the electric locomotive or the cab of the steam locomotive. When the apparatus is descending grad pecial blower R is provided for cratine trated onl is located within the boiler and is adapted inbe the energy of the weight of the train-may be utilized to aetuate the motors as generators, the ener `thus* obtained being transmitted to suita le storage batteries or the electric energy converted. into heat which can be utilized for any suitable purpose, as for instance generating steam to be used in driving the turbine (i. Power for the motors, the storage batteries and means for changing electric encrg into heat may be obtained from an outs! e source through a suitable collector 1).', which is connected to the stora` e batteries, motors and. heating element by suitable wiring which is diarammatically illustrated in dotted lines. he generator C may also be connected to the storage batteries by suitable wiring illusdia' ammaticall l The tur ine is preferably of the socalled low pressure or mixed flow condensi steam type and therefore it will Abe possib ev` if desired when starting the train to deliver some high pressure steam direct from the boiler of the steam locomotive to the turbine, this steam supply being' cut olf when the steam locomotive delivers sollicient exhaust to the turbine to properly actuate it. Y

Means is provided for converting the en` ergy developed by the locomotive and train in descending a grade into heat, which heat may be used in generating steam to: drive the turbine, or for other purposes. When it is desired to utilize this heat generating steam, a construction similar to that illustrated in the drawings 4may be rev sorted to. In this construction a boiler .Y is supported upon the electric locomotive, which boiler has a connection Z with the feed water ipe and a connection X with the pipe H tlirough which the exhaust steam is conducted to the turbincG. An elec- .i trical unit W eonneetedto the wiring lea'ding to the motors D .and the collector D" to hea-t the water thereintofcreate steam tos-,apply the turbo-electric generator." I

"Frommthe fore roing description and theY drawing itgwill seen that according to' the present- 1 Vntion a :considerable portion of the powe a steamy locomotive which has heretofore been wasted is uticonsume about 26 pounds ofsteam r horse power hour and a, superheated locomotive aboutl 2l pounds per horse power hour. low pressure steam turbine such as .is herel ore referred to may oonsumeapp'roxif mately 30 pounds of steaml per horse power hour. 'Therefore the power developed liy such an arrangement of, "arts, as'is hereinbefore described and il ustrated in the drawing, assuming the aforesaidv'steam consumptionwiu be Tf=s6% or gagnez, of the power developed by the steam locomotive tion.

- .Supplying lized. A saturated steam hwve willi...

without any increase in the fuel consumption.

In the drawing the several parts are necessarily illustrated more or less conventionally and diagrammatically and it will be evident that the invention is not limited in any way to the particular arrangement of parts illustrated. There can of course be considerable variation in the form and relative arrangement of the several 'parts lwithout departing fromV the ASpirit of the inven-` v 5 Havi, thus described the invention, what is claimx` and desired to be secured by Letters Patent is:

1. The combination with tive, of an independentlyv operable electric locomotive detachably connected thereto, said electric locomotive having' motors connected to its .driving Vwheels, a generator adapted :to Vb e connecte lto'said motors, a collector for obtainih currentjorsaid motors fromxan externa sourde; and 4`a"t`rbi'ne for driving` said "geyneltttorf,A adapted' to be operated V y the exhaust steam from the steam locomotiva` h 2. The combination with'a stain locomotive, of a. separately operable electric `locomotive adapted t'oyb'e coupled to the" steam locomotive .and havin driving vI'xlotorsfconnected lto the` wheels thereof and nie-ans for {curr/ent, fork energiing said mo. tors sait means includinig'stora'gebatteries. a colleetorkf Qbtaning current from7 'an external source, and "a' generator, said gener ato:` being conlectedfto a turbine adapted to lbe d rivelflfyxhstfsteamf yfromv yth engine.

, 3.v Thocoinbinationfwith "a steam Ilocomoturbine to gctnu'telthe hitler," means 'for con meansjforcbridncting heated waterfroln said ,condgnse'frito the-` boilerf of the steamv locomotive',i1 coolingtower,`a.pilmp for 'onveyinf water'lfom' the condenser to saidl tower, an means' ffndlive'rgq a han rif-air into said `cooling tower to passover thewater therein.- i' Y' fi'stearil locomo- `adapted` toj'iljc tuated frin Athe generator and ":ulipt-e'd:tg serve as. genrlto'sf whenA the locomoti 'ifef' is4 descendi iig il",f ,l'litle, a "tu rbi ne for. at'atlgfrghe genera-meenam@ to be driven yr steun `e'irha'ulsted frortfthe locomotive, and me'ginsig; 4'fo'nvertingf-lthe -energy generated byQtlre/ Otors, acting als generators int? heat? if .vH-J 1' 5. Th'ecombintionivith steaiillocomo- `tive, ofY an electric'u 'generaton-f motors adapted t'lcev actuated from thgenerator to Asulznplement. the power of the's'teani'locomotive, a turbine forK actuating ,the generator adapted to be driven by steam exhausted cludes a steam turbine, a condenser, a coolin chamber for the condensing water, and

a an for causing a current of air to flow through said chamber in contact with the water.

7. The combination with e, steam locomotive, of a turbine adapted to be driven by the exhaust steam from the locomotive, an electric generator ada ted to be driven from the turblne, motors a. apted tobe driven by current from the generators, storage batteries, and means for'furnshing current to the motors from either the storage batteries or from en outside source.

8. The combination with a steam locomotive, of a separately operable electric locomotive havingmounted thereon a turbine adapted to be driven by the exhaust steam from the Steam locomotive, an electric generator adapted to be driven from the turbine,

blower, an

means for collecting current from an outsidel source motors adapted to be driven by current from the generator or by currenttaken from an outside source and which may also serve as .generators when the locomotive is descending a Agrade, and a. storage battery for storing the energy thus generated by the motors.

9. The combination with a steam locomotive, of a separately Aoperable electric locomotive adapted to be coupled thereto, said electric locomotive carrying driving motors, an electric enerator a steam turbine, and a (i: detachable connections between the locomotives whereby exhaust steam from the steam locomotive may be conducted to the turbine and the gaseous current generated by the blower conducted to the steam locomotive, for the purpose set'forth.

10. An electric locomotive havin drive motors, storage batteries, a device or collectin current from an outside source, a generator adapted to be connected to the motors or storage batteries, and means adapted to be driven by 'the exhaust steam 4from a steam locomotive for drivi the generator.

In testimony whereof I a x my si ature.

JOH D. P GH. 

